User Rating: 2 / 5

Comparison and Logical operators are used to test for true or false

Comparison operators are used in logical statements to determine equality or difference between variables or values.

Given that x=5, the table below explains the comparison operators:

 Operators Description Comparing Returns
 == equal to x==8 false x==5 true === exactly equal to x==="5" false (equal to value and equal type) x===5 true != not equal x!8 true !== not equal (different values x!=="5" true or different type) x!==5 false > greater than x>8 false < less than x<8 true >= greater than or equal to x>=8 false
 <= less than or equal to x<=8 true

Logical Operators are used to mark the relationship. Different variables or values

Given that x=6 and y=3, the table below explains the logical operators:

Operators         Description            Example

&&                     and                 (x < 10 && y > 1) is true

||                       or                   (x==5 || y==5) is false

!                       not                 !(x==y) is true

Conditional Operators

JavaScript also contains a conditional operato that assigns a value to a variable based on some condition.

Syntax

variablename=(condition)?value1:value2

Example: If the variable age is a value below 18, the value f the variable voteable will be "Too young, otherwise the value of voteable will be "Old enough":

`<html><body><p>Click the button to check the age.</p>Age:<input id="age" value="18" /><p>Old enough to vote?</p><button onclick="myFunction()">Try it</button><p id="demo"></p><script>function myFunction(){var age,voteable;age=document.getElementById("age").value;voteable=(age<18)?"Too young":"Old enough";document.getElementById("demo").innerHTML=voteable;}</script></body></html>This is the result:`

Next

Chapter 12 - JavaScript Conditions

Recent Topics
##### Recent
Does MD Watermark work under Joomla 3.9.20?
By Balazs Thu 16 Jul 2020 4:48 pm Board English Language
6
667
Thu 16 Jul 2020 10:31 pm By Balazs
The program calculates the PMT
By prmindphp Wed 20 May 2020 6:45 pm Board English Language
1
230
Thu 21 May 2020 5:57 pm By prmindphp
Helper for calculating NPER values
By prmindphp Tue 19 May 2020 6:55 pm Board English Language
1
213
Thu 21 May 2020 5:59 pm By prmindphp
Program that will be used for home loan calculations
By prmindphp Mon 18 May 2020 6:49 pm Board English Language
1
237
Thu 21 May 2020 6:02 pm By prmindphp
Tools that will help calculate car tax
By prmindphp Thu 14 May 2020 7:00 pm Board English Language
1
228
Fri 15 May 2020 12:03 am By prmindphp
Helper to create slidershow, Module Product Slide of MooZiiCart
By prmindphp Thu 30 Apr 2020 6:32 pm Board English Language
0
290
Thu 30 Apr 2020 6:32 pm By prmindphp
Helper in searching products by category and keywords with Module Ajax Search of MooZiiCart
By prmindphp Tue 28 Apr 2020 6:17 pm Board English Language
0
257
Tue 28 Apr 2020 6:17 pm By prmindphp
Helper to restore the system to clear data, Plugin System MRestore
By prmindphp Fri 24 Apr 2020 7:05 pm Board English Language
0
241
Fri 24 Apr 2020 7:05 pm By prmindphp
Creating social share buttons, share the website's content to Social Media With Plugin Content Msocial
By prmindphp Wed 22 Apr 2020 7:05 pm Board English Language
0
229
Wed 22 Apr 2020 7:05 pm By prmindphp
Create Content Marketing and Product with Content Product Match of MooZiiCart
By prmindphp Tue 21 Apr 2020 7:19 pm Board English Language
0
269
Tue 21 Apr 2020 7:19 pm By prmindphp
Filtering for find the product with Module Filter product of MooZiiCart
By prmindphp Thu 09 Apr 2020 6:51 pm Board English Language
0
269
Thu 09 Apr 2020 6:51 pm By prmindphp
Template Megadeal of MooZiiCart for creating websites to sell products online
By prmindphp Fri 03 Apr 2020 6:45 pm Board English Language
0
427
Fri 03 Apr 2020 6:45 pm By prmindphp
[MooZiiCart] [Module] Displaying products that customers are interested by Wishlist Module
By prmindphp Fri 27 Mar 2020 5:46 pm Board English Language
0
634
Fri 27 Mar 2020 5:46 pm By prmindphp
Show the Bestsellers Product by Module Bestseller
By prmindphp Wed 25 Mar 2020 6:04 pm Board English Language
0
434
Wed 25 Mar 2020 6:04 pm By prmindphp
Show Products Category by Module Category
By prmindphp Tue 24 Mar 2020 6:07 pm Board English Language
0
535
Tue 24 Mar 2020 6:07 pm By prmindphp
Plugin System MZC Auto Close to enable the open and close odering system
By prmindphp Wed 19 Feb 2020 6:38 pm Board English Language
0
3126
Wed 19 Feb 2020 6:38 pm By prmindphp
MDPartner Component for store client data in CRM system
By prmindphp Sat 25 Jan 2020 3:04 pm Board English Language
0
893
Sat 25 Jan 2020 3:04 pm By prmindphp
i am looking for help
By Anonymous Tue 14 Jan 2020 5:46 pm Board English Language
1
924
Tue 14 Jan 2020 6:03 pm By noppadonsk
Dot Net Training
By Poonaam Fri 10 Jan 2020 2:20 pm Board English Language
0
1173
Fri 10 Jan 2020 2:20 pm By Poonaam
MDRental, Area management assistant for rental business
By prmindphp Wed 08 Jan 2020 6:51 pm Board English Language
0
908
Wed 08 Jan 2020 6:51 pm By prmindphp